Nano Every Battery Power

Other Hardware General Electronics
1

Hi, I am pretty new to Arduino and I am making a project with my Uno R4 Wifi, it uses a servo and a motor to push a door closed, and when I power it with a 9v battery it barely moves the door, but when I use 9v wall power, it works very well, maybe better than the USB. But now I'm going to buy a few Nano Everys to make it wirelessly controlled, but the Every doesn't have a barrel jack, so I need to plug + to 5v and - to VIN, I think... but what battery pack should I use that can power the components with enough strength to move the door? I know a traditional 9v is usually horrible, but I was wondering if it's enough for a smaller board like the Nano Every? If not is a pack of 6 1.5 volts better?

I am using a
hobby servo (Hi-tec Hs-645 MG),
a generic dc motor with gearbox,
a NRF24L01 for wireless,
and a L9110S for driving the motor

Thank you!

2

Motors and servos should be powered separately from the microprocessor, and for the motor, you will need a suitable motor driver. Post links to the all the parts you will be using and people can advise on suitable batteries. The more details you supply, the better!

3

As far as the battery you are correct, I would be surprised if it was above 5V when the motor is running. The L293D is a nice part but on the obsolete side. Its biggest drawback is the 3V loss when it is powering a motor, that is burnt as heat. Using a MOSFET based H bridge will give you more motor power and speed, with a benefit of a longer battery life.

I would not bother with the 9V battery, it is expensive and does not have the power needed. A wall wart or different battery setup would be better. It is not the 9V but the energy available from that source. Check the amp capacity of the different sources you have used. Why not use your existing 9V power supply.

4

so I dont use any motor driver?
and I cant use the wall power 9v ont he nano im going to get because it doesnt have a barrel jack, so i was going to wire a battery pack to VIN and GND I just didnt know the battery i need

5

It has a DC-DC converter (not a linear regulator).
Get a '2S' (7.4V), rechargeable, either a LiPO (something 'protected') or NiMH.

6

How long do those run for?
And is it possible to use a one use battery because I would like the project to be running all the time and not have to recharge it.

7

No matter what, any battery will deplete. Are you going to replace with a reserve rechargeable or another burner?
How long will it last? It depends what you use, a 2S1A or 2S2A, a bunch of AA's or a bunch of D cells.

Post Edit - Muting

8

I would want to replace them with non-rechargeable batteries, but which batteries and how many is what I want to figure out.

Also, would one of these work to drive the motor rather than the L293D?

1 Like
9

You really need to put a time value into your figuring out. How much time should your project operate on battery power?

10

Well I'm making a door closer, so hopefully for at least a few days.

11

You could post specs of them, without no one can tell...

12
  • Buy an inexpensive one.
13

so I need one to know?

14

  • The only way to confirm what the operation current is by measuring actual value.

  • If you had data sheets for all components, you could sum all the maximum numbers.

  • As mentioned, your required time of operation is needed to determine the battery capacity.

15

That servo has stall current of 2.5A, what about your "generic dc motor"?
It's not only question of battery life but also if your batteries can supply enough to power them in the first place.

16

well if you google "dc motor with gearbox" it's one of those yellow ones.
the NRF24L01 is this one

And the L9110S is the one I sent in the first post.

And the Arduino I plan on using is the Nano Every (if that does anything)

17

What is the rated voltage and full load current of a yellow motor?

18

Rated voltage of 9 would be good, and full load current from 0.5 to 3 amps

19

For motors you could use 8AA batteries at 6V. But 6V is not good voltage for Arduino. You could use boost converter.

20

So, one pack with 8 AAs that powers the servo, the motor, the driver, and the NRF.
And for the arduino nano I need a boost converter? how do i use that?